1 /* 2 * INET An implementation of the TCP/IP protocol suite for the LINUX 3 * operating system. INET is implemented using the BSD Socket 4 * interface as the means of communication with the user level. 5 * 6 * Definitions of the Internet Protocol. 7 * 8 * Version: @(#)in.h 1.0.1 04/21/93 9 * 10 * Authors: Original taken from the GNU Project <netinet/in.h> file. 11 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License 15 * as published by the Free Software Foundation; either version 16 * 2 of the License, or (at your option) any later version. 17 */ 18 #ifndef _UAPI_LINUX_IN_H 19 #define _UAPI_LINUX_IN_H 20 21 #include <linux/types.h> 22 #include <linux/libc-compat.h> 23 #include <linux/socket.h> 24 25 #if __UAPI_DEF_IN_IPPROTO 26 /* Standard well-defined IP protocols. */ 27 enum { 28 IPPROTO_IP = 0, /* Dummy protocol for TCP */ 29 #define IPPROTO_IP IPPROTO_IP 30 IPPROTO_ICMP = 1, /* Internet Control Message Protocol */ 31 #define IPPROTO_ICMP IPPROTO_ICMP 32 IPPROTO_IGMP = 2, /* Internet Group Management Protocol */ 33 #define IPPROTO_IGMP IPPROTO_IGMP 34 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */ 35 #define IPPROTO_IPIP IPPROTO_IPIP 36 IPPROTO_TCP = 6, /* Transmission Control Protocol */ 37 #define IPPROTO_TCP IPPROTO_TCP 38 IPPROTO_EGP = 8, /* Exterior Gateway Protocol */ 39 #define IPPROTO_EGP IPPROTO_EGP 40 IPPROTO_PUP = 12, /* PUP protocol */ 41 #define IPPROTO_PUP IPPROTO_PUP 42 IPPROTO_UDP = 17, /* User Datagram Protocol */ 43 #define IPPROTO_UDP IPPROTO_UDP 44 IPPROTO_IDP = 22, /* XNS IDP protocol */ 45 #define IPPROTO_IDP IPPROTO_IDP 46 IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */ 47 #define IPPROTO_TP IPPROTO_TP 48 IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */ 49 #define IPPROTO_DCCP IPPROTO_DCCP 50 IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */ 51 #define IPPROTO_IPV6 IPPROTO_IPV6 52 IPPROTO_RSVP = 46, /* RSVP Protocol */ 53 #define IPPROTO_RSVP IPPROTO_RSVP 54 IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */ 55 #define IPPROTO_GRE IPPROTO_GRE 56 IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */ 57 #define IPPROTO_ESP IPPROTO_ESP 58 IPPROTO_AH = 51, /* Authentication Header protocol */ 59 #define IPPROTO_AH IPPROTO_AH 60 IPPROTO_MTP = 92, /* Multicast Transport Protocol */ 61 #define IPPROTO_MTP IPPROTO_MTP 62 IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */ 63 #define IPPROTO_BEETPH IPPROTO_BEETPH 64 IPPROTO_ENCAP = 98, /* Encapsulation Header */ 65 #define IPPROTO_ENCAP IPPROTO_ENCAP 66 IPPROTO_PIM = 103, /* Protocol Independent Multicast */ 67 #define IPPROTO_PIM IPPROTO_PIM 68 IPPROTO_COMP = 108, /* Compression Header Protocol */ 69 #define IPPROTO_COMP IPPROTO_COMP 70 IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */ 71 #define IPPROTO_SCTP IPPROTO_SCTP 72 IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */ 73 #define IPPROTO_UDPLITE IPPROTO_UDPLITE 74 IPPROTO_MPLS = 137, /* MPLS in IP (RFC 4023) */ 75 #define IPPROTO_MPLS IPPROTO_MPLS 76 IPPROTO_RAW = 255, /* Raw IP packets */ 77 #define IPPROTO_RAW IPPROTO_RAW 78 IPPROTO_MAX 79 }; 80 #endif 81 82 #if __UAPI_DEF_IN_ADDR 83 /* Internet address. */ 84 struct in_addr { 85 __be32 s_addr; 86 }; 87 #endif 88 89 #define IP_TOS 1 90 #define IP_TTL 2 91 #define IP_HDRINCL 3 92 #define IP_OPTIONS 4 93 #define IP_ROUTER_ALERT 5 94 #define IP_RECVOPTS 6 95 #define IP_RETOPTS 7 96 #define IP_PKTINFO 8 97 #define IP_PKTOPTIONS 9 98 #define IP_MTU_DISCOVER 10 99 #define IP_RECVERR 11 100 #define IP_RECVTTL 12 101 #define IP_RECVTOS 13 102 #define IP_MTU 14 103 #define IP_FREEBIND 15 104 #define IP_IPSEC_POLICY 16 105 #define IP_XFRM_POLICY 17 106 #define IP_PASSSEC 18 107 #define IP_TRANSPARENT 19 108 109 /* BSD compatibility */ 110 #define IP_RECVRETOPTS IP_RETOPTS 111 112 /* TProxy original addresses */ 113 #define IP_ORIGDSTADDR 20 114 #define IP_RECVORIGDSTADDR IP_ORIGDSTADDR 115 116 #define IP_MINTTL 21 117 #define IP_NODEFRAG 22 118 #define IP_CHECKSUM 23 119 #define IP_BIND_ADDRESS_NO_PORT 24 120 121 /* IP_MTU_DISCOVER values */ 122 #define IP_PMTUDISC_DONT 0 /* Never send DF frames */ 123 #define IP_PMTUDISC_WANT 1 /* Use per route hints */ 124 #define IP_PMTUDISC_DO 2 /* Always DF */ 125 #define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */ 126 /* Always use interface mtu (ignores dst pmtu) but don't set DF flag. 127 * Also incoming ICMP frag_needed notifications will be ignored on 128 * this socket to prevent accepting spoofed ones. 129 */ 130 #define IP_PMTUDISC_INTERFACE 4 131 /* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get 132 * fragmented if they exeed the interface mtu 133 */ 134 #define IP_PMTUDISC_OMIT 5 135 136 #define IP_MULTICAST_IF 32 137 #define IP_MULTICAST_TTL 33 138 #define IP_MULTICAST_LOOP 34 139 #define IP_ADD_MEMBERSHIP 35 140 #define IP_DROP_MEMBERSHIP 36 141 #define IP_UNBLOCK_SOURCE 37 142 #define IP_BLOCK_SOURCE 38 143 #define IP_ADD_SOURCE_MEMBERSHIP 39 144 #define IP_DROP_SOURCE_MEMBERSHIP 40 145 #define IP_MSFILTER 41 146 #define MCAST_JOIN_GROUP 42 147 #define MCAST_BLOCK_SOURCE 43 148 #define MCAST_UNBLOCK_SOURCE 44 149 #define MCAST_LEAVE_GROUP 45 150 #define MCAST_JOIN_SOURCE_GROUP 46 151 #define MCAST_LEAVE_SOURCE_GROUP 47 152 #define MCAST_MSFILTER 48 153 #define IP_MULTICAST_ALL 49 154 #define IP_UNICAST_IF 50 155 156 #define MCAST_EXCLUDE 0 157 #define MCAST_INCLUDE 1 158 159 /* These need to appear somewhere around here */ 160 #define IP_DEFAULT_MULTICAST_TTL 1 161 #define IP_DEFAULT_MULTICAST_LOOP 1 162 163 /* Request struct for multicast socket ops */ 164 165 #if __UAPI_DEF_IP_MREQ 166 struct ip_mreq { 167 struct in_addr imr_multiaddr; /* IP multicast address of group */ 168 struct in_addr imr_interface; /* local IP address of interface */ 169 }; 170 171 struct ip_mreqn { 172 struct in_addr imr_multiaddr; /* IP multicast address of group */ 173 struct in_addr imr_address; /* local IP address of interface */ 174 int imr_ifindex; /* Interface index */ 175 }; 176 177 struct ip_mreq_source { 178 __be32 imr_multiaddr; 179 __be32 imr_interface; 180 __be32 imr_sourceaddr; 181 }; 182 183 struct ip_msfilter { 184 __be32 imsf_multiaddr; 185 __be32 imsf_interface; 186 __u32 imsf_fmode; 187 __u32 imsf_numsrc; 188 __be32 imsf_slist[1]; 189 }; 190 191 #define IP_MSFILTER_SIZE(numsrc) \ 192 (sizeof(struct ip_msfilter) - sizeof(__u32) \ 193 + (numsrc) * sizeof(__u32)) 194 195 struct group_req { 196 __u32 gr_interface; /* interface index */ 197 struct __kernel_sockaddr_storage gr_group; /* group address */ 198 }; 199 200 struct group_source_req { 201 __u32 gsr_interface; /* interface index */ 202 struct __kernel_sockaddr_storage gsr_group; /* group address */ 203 struct __kernel_sockaddr_storage gsr_source; /* source address */ 204 }; 205 206 struct group_filter { 207 __u32 gf_interface; /* interface index */ 208 struct __kernel_sockaddr_storage gf_group; /* multicast address */ 209 __u32 gf_fmode; /* filter mode */ 210 __u32 gf_numsrc; /* number of sources */ 211 struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */ 212 }; 213 214 #define GROUP_FILTER_SIZE(numsrc) \ 215 (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \ 216 + (numsrc) * sizeof(struct __kernel_sockaddr_storage)) 217 #endif 218 219 #if __UAPI_DEF_IN_PKTINFO 220 struct in_pktinfo { 221 int ipi_ifindex; 222 struct in_addr ipi_spec_dst; 223 struct in_addr ipi_addr; 224 }; 225 #endif 226 227 /* Structure describing an Internet (IP) socket address. */ 228 #if __UAPI_DEF_SOCKADDR_IN 229 #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ 230 struct sockaddr_in { 231 __kernel_sa_family_t sin_family; /* Address family */ 232 __be16 sin_port; /* Port number */ 233 struct in_addr sin_addr; /* Internet address */ 234 235 /* Pad to size of `struct sockaddr'. */ 236 unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) - 237 sizeof(unsigned short int) - sizeof(struct in_addr)]; 238 }; 239 #define sin_zero __pad /* for BSD UNIX comp. -FvK */ 240 #endif 241 242 #if __UAPI_DEF_IN_CLASS 243 /* 244 * Definitions of the bits in an Internet address integer. 245 * On subnets, host and network parts are found according 246 * to the subnet mask, not these masks. 247 */ 248 #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0) 249 #define IN_CLASSA_NET 0xff000000 250 #define IN_CLASSA_NSHIFT 24 251 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) 252 #define IN_CLASSA_MAX 128 253 254 #define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000) 255 #define IN_CLASSB_NET 0xffff0000 256 #define IN_CLASSB_NSHIFT 16 257 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) 258 #define IN_CLASSB_MAX 65536 259 260 #define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000) 261 #define IN_CLASSC_NET 0xffffff00 262 #define IN_CLASSC_NSHIFT 8 263 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) 264 265 #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000) 266 #define IN_MULTICAST(a) IN_CLASSD(a) 267 #define IN_MULTICAST_NET 0xF0000000 268 269 #define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000) 270 #define IN_BADCLASS(a) IN_EXPERIMENTAL((a)) 271 272 /* Address to accept any incoming messages. */ 273 #define INADDR_ANY ((unsigned long int) 0x00000000) 274 275 /* Address to send to all hosts. */ 276 #define INADDR_BROADCAST ((unsigned long int) 0xffffffff) 277 278 /* Address indicating an error return. */ 279 #define INADDR_NONE ((unsigned long int) 0xffffffff) 280 281 /* Network number for local host loopback. */ 282 #define IN_LOOPBACKNET 127 283 284 /* Address to loopback in software to local host. */ 285 #define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */ 286 #define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000) 287 288 /* Defines for Multicast INADDR */ 289 #define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */ 290 #define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */ 291 #define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */ 292 #define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */ 293 #endif 294 295 /* <asm/byteorder.h> contains the htonl type stuff.. */ 296 #include <asm/byteorder.h> 297 298 299 #endif /* _UAPI_LINUX_IN_H */ 300